sis_accel.c

一个2.4.21版本的嵌入式linux内核

#endif
    return(0);
}

void sisfb_syncaccel(void)
{
    if(sisvga_engine == SIS_300_VGA) {
    	SiS300Sync();
    } else {
    	SiS310Sync();
    }
}

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)  /* --------------- 2.5 --------------- */

int fbcon_sis_sync(struct fb_info *info)
{
   if(!ivideo.accel)
   	return 0;
   
   CRITFLAGS
   if(sisvga_engine == SIS_300_VGA) {
      SiS300Sync();
   } else {
      SiS310Sync();
   }
   CRITEND
   return 0;
}

void fbcon_sis_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
   int col=0;
   CRITFLAGS

   TWDEBUG("Inside sis_fillrect");
   if(!rect->width || !rect->height)
   	return;

   if(!ivideo.accel) {
	cfb_fillrect(info, rect);
	return;
   }
   
   switch(info->var.bits_per_pixel) {
		case 8: col = rect->color;
			break;
		case 16: col = ((u32 *)(info->pseudo_palette))[rect->color];
			 break;
		case 32: col = ((u32 *)(info->pseudo_palette))[rect->color];
			 break;
	}	

   if(sisvga_engine == SIS_300_VGA) {
	   CRITBEGIN
	   SiS300SetupForSolidFill(col, myrops[rect->rop], 0);
	   SiS300SubsequentSolidFillRect(rect->dx, rect->dy, rect->width, rect->height);
	   CRITEND
	   SiS300Sync();
   } else {
	   CRITBEGIN
	   SiS310SetupForSolidFill(col, myrops[rect->rop], 0);
	   SiS310SubsequentSolidFillRect(rect->dx, rect->dy, rect->width, rect->height);
	   CRITEND
	   SiS310Sync();
   }

}

void fbcon_sis_copyarea(struct fb_info *info, const struct fb_copyarea *area)
{
   int xdir, ydir;
   CRITFLAGS

   TWDEBUG("Inside sis_copyarea");
   if(!ivideo.accel) {
   	cfb_copyarea(info, area);
	return;
   }

   if(!area->width || !area->height)
   	return;

   if(area->sx < area->dx) xdir = 0;
   else                    xdir = 1;
   if(area->sy < area->dy) ydir = 0;
   else                    ydir = 1;

   if(sisvga_engine == SIS_300_VGA) {
      CRITBEGIN
      SiS300SetupForScreenToScreenCopy(xdir, ydir, 3, 0, -1);
      SiS300SubsequentScreenToScreenCopy(area->sx, area->sy, area->dx, area->dy, area->width, area->height);
      CRITEND
      SiS300Sync();
   } else {
      CRITBEGIN
      SiS310SetupForScreenToScreenCopy(xdir, ydir, 3, 0, -1);
      SiS310SubsequentScreenToScreenCopy(area->sx, area->sy, area->dx, area->dy, area->width, area->height);
      CRITEND
      SiS310Sync();
   }
}

#endif

#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)  /* -------------- 2.4 --------------- */

void fbcon_sis_bmove(struct display *p, int srcy, int srcx,
			    int dsty, int dstx, int height, int width)
{
        int xdir, ydir;
	CRITFLAGS

	if(!ivideo.accel) {
	    switch(ivideo.video_bpp) {
	    case 8:
#ifdef FBCON_HAS_CFB8
	       fbcon_cfb8_bmove(p, srcy, srcx, dsty, dstx, height, width);
#endif
	       break;
	    case 16:
#ifdef FBCON_HAS_CFB16
	       fbcon_cfb16_bmove(p, srcy, srcx, dsty, dstx, height, width);
#endif
	       break;
	    case 32:
#ifdef FBCON_HAS_CFB32
	       fbcon_cfb32_bmove(p, srcy, srcx, dsty, dstx, height, width);
#endif
	       break;
            }
	    return;
	}

	srcx *= fontwidth(p);
	srcy *= fontheight(p);
	dstx *= fontwidth(p);
	dsty *= fontheight(p);
	width *= fontwidth(p);
	height *= fontheight(p);

	if(srcx < dstx) xdir = 0;
	else            xdir = 1;
	if(srcy < dsty) ydir = 0;
	else            ydir = 1;

	if(sisvga_engine == SIS_300_VGA) {
	   CRITBEGIN
	   SiS300SetupForScreenToScreenCopy(xdir, ydir, 3, 0, -1);
	   SiS300SubsequentScreenToScreenCopy(srcx, srcy, dstx, dsty, width, height);
	   CRITEND
	   SiS300Sync();
	} else {
	   CRITBEGIN
	   SiS310SetupForScreenToScreenCopy(xdir, ydir, 3, 0, -1);
	   SiS310SubsequentScreenToScreenCopy(srcx, srcy, dstx, dsty, width, height);
	   CRITEND
	   SiS310Sync();
#if 0	   
	   printk(KERN_INFO "sis_bmove sx %d sy %d dx %d dy %d w %d h %d\n",
		srcx, srcy, dstx, dsty, width, height);
#endif		
	}
}


static void fbcon_sis_clear(struct vc_data *conp, struct display *p,
			int srcy, int srcx, int height, int width, int color)
{
	CRITFLAGS

	srcx *= fontwidth(p);
	srcy *= fontheight(p);
	width *= fontwidth(p);
	height *= fontheight(p);

	if(sisvga_engine == SIS_300_VGA) {
	   CRITBEGIN
	   SiS300SetupForSolidFill(color, 3, 0);
	   SiS300SubsequentSolidFillRect(srcx, srcy, width, height);
	   CRITEND
	   SiS300Sync();
	} else {
	   CRITBEGIN
	   SiS310SetupForSolidFill(color, 3, 0);
	   SiS310SubsequentSolidFillRect(srcx, srcy, width, height);
	   CRITEND
	   SiS310Sync();
	}
}

void fbcon_sis_clear8(struct vc_data *conp, struct display *p,
			int srcy, int srcx, int height, int width)
{
	u32 bgx;

	if(!ivideo.accel) {
#ifdef FBCON_HAS_CFB8
	    fbcon_cfb8_clear(conp, p, srcy, srcx, height, width);
#endif
	    return;
	}

	bgx = attr_bgcol_ec(p, conp);
	fbcon_sis_clear(conp, p, srcy, srcx, height, width, bgx);
}

void fbcon_sis_clear16(struct vc_data *conp, struct display *p,
			int srcy, int srcx, int height, int width)
{
	u32 bgx;
	if(!ivideo.accel) {
#ifdef FBCON_HAS_CFB16
	    fbcon_cfb16_clear(conp, p, srcy, srcx, height, width);
#endif
	    return;
	}

	bgx = ((u_int16_t*)p->dispsw_data)[attr_bgcol_ec(p, conp)];
	fbcon_sis_clear(conp, p, srcy, srcx, height, width, bgx);
}

void fbcon_sis_clear32(struct vc_data *conp, struct display *p,
			int srcy, int srcx, int height, int width)
{
	u32 bgx;

	if(!ivideo.accel) {
#ifdef FBCON_HAS_CFB32
	    fbcon_cfb32_clear(conp, p, srcy, srcx, height, width);
#endif
	    return;
	}

	bgx = ((u_int32_t*)p->dispsw_data)[attr_bgcol_ec(p, conp)];
	fbcon_sis_clear(conp, p, srcy, srcx, height, width, bgx);
}

void fbcon_sis_revc(struct display *p, int srcx, int srcy)
{
	CRITFLAGS

	if(!ivideo.accel) {
	    switch(ivideo.video_bpp) {
	    case 16:
#ifdef FBCON_HAS_CFB16
	       fbcon_cfb16_revc(p, srcx, srcy);
#endif
	       break;
	    case 32:
#ifdef FBCON_HAS_CFB32
	       fbcon_cfb32_revc(p, srcx, srcy);
#endif
	       break;
            }
	    return;
	}

	srcx *= fontwidth(p);
	srcy *= fontheight(p);

	if(sisvga_engine == SIS_300_VGA) {
	   CRITBEGIN
	   SiS300SetupForSolidFill(0, 0x0a, 0);
	   SiS300SubsequentSolidFillRect(srcx, srcy, fontwidth(p), fontheight(p));
	   CRITEND
	   SiS300Sync();
	} else {
	   CRITBEGIN
	   SiS310SetupForSolidFill(0, 0x0a, 0);
	   SiS310SubsequentSolidFillRect(srcx, srcy, fontwidth(p), fontheight(p));
	   CRITEND
	   SiS310Sync();
	}
}

#ifdef FBCON_HAS_CFB8
struct display_switch fbcon_sis8 = {
	setup:			fbcon_cfb8_setup,
	bmove:			fbcon_sis_bmove,
	clear:			fbcon_sis_clear8,
	putc:			fbcon_cfb8_putc,
	putcs:			fbcon_cfb8_putcs,
	revc:			fbcon_cfb8_revc,
	clear_margins:		fbcon_cfb8_clear_margins,
	fontwidthmask:		FONTWIDTH(4)|FONTWIDTH(8)|FONTWIDTH(12)|FONTWIDTH(16)
};
#endif
#ifdef FBCON_HAS_CFB16
struct display_switch fbcon_sis16 = {
	setup:			fbcon_cfb16_setup,
	bmove:			fbcon_sis_bmove,
	clear:			fbcon_sis_clear16,
	putc:			fbcon_cfb16_putc,
	putcs:			fbcon_cfb16_putcs,
	revc:			fbcon_sis_revc,
	clear_margins:		fbcon_cfb16_clear_margins,
	fontwidthmask:		FONTWIDTH(4)|FONTWIDTH(8)|FONTWIDTH(12)|FONTWIDTH(16)
};
#endif
#ifdef FBCON_HAS_CFB32
struct display_switch fbcon_sis32 = {
	setup:			fbcon_cfb32_setup,
	bmove:			fbcon_sis_bmove,
	clear:			fbcon_sis_clear32,
	putc:			fbcon_cfb32_putc,
	putcs:			fbcon_cfb32_putcs,
	revc:			fbcon_sis_revc,
	clear_margins:		fbcon_cfb32_clear_margins,
	fontwidthmask:		FONTWIDTH(4)|FONTWIDTH(8)|FONTWIDTH(12)|FONTWIDTH(16)
};
#endif

#endif /* KERNEL VERSION */